Brown, Duncan
Current rating: 1613
Record: 26-19
| Grand Prix Montreal 2016 (EMN limited) | starting rating: 1623 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 2205 | Quevillon, Jonathan (1527) | Won 2-1 | +161639 |
| 2sealed | 2117 | Brule, Simon (1461) | Won 2-1 | +151654 |
| 3sealed | 2116 | Ross-Latour, Jeremie (1643) | Lost 0-0 | -191635 |
| 4sealed | 2325 | Widawski, Xavier (1755) | Lost 0-2 | -151620 |
| 5sealed | 2370 | Gagnon, Frederic (1336) | Won 2-0 | +131633 |
| 6sealed | 2254 | Kong, Colin (1522) | Lost 0-2 | -201613 |
| top | average opponent: 1541record: 3-3 | new rating: 1613 | ||
| Grand Prix Montreal 2015 (DTK limited) | starting rating: 1635 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 36 | Ardizzone, Thomas (1500) | Won 2-0 | +151650 |
| 2sealed | 249 | Robinson, Andrew [CAN] (1521) | Lost 0-2 | -201630 |
| 3sealed | 272 | Picard, Jeremi (1500) | Lost 1-2 | -201610 |
| 4sealed | 485 | Clementino, Kyle (1482) | Won 2-0 | +151625 |
| 5sealed | 359 | Proulx, Simon (1573) | Won 2-1 | +171642 |
| 6sealed | 273 | Branson, Kevin (1545) | Lost 0-2 | -191623 |
| top | average opponent: 1520record: 3-3 | new rating: 1623 | ||
| Grand Prix Toronto 2013 (THS limited) | starting rating: 1621 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 152 | Pederson, Erik (1500) | Won 2-1 | +161637 |
| 2sealed | 289 | Lau, Alvin (1518) | Won 2-1 | +161653 |
| 3sealed | 177 | McIelwain, Glenn (1894) | Won 2-0 | +221675 |
| 4sealed | 436 | Ketita, Nassim (1833) | Lost 1-2 | -151660 |
| 5sealed | 335 | Klein, Conal (1560) | Lost 0-2 | -201640 |
| 6sealed | 405 | Park, Kevin (1485) | Won 2-0 | +151655 |
| 7sealed | 194 | Allard, Jocelyn (1526) | Lost 0-2 | -201635 |
| top | average opponent: 1617record: 4-3 | new rating: 1635 | ||
| Grand Prix Philadelphia 2012 (RTR limited) | starting rating: 1570 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 316 | Crossey, Jim (1500) | Won 2-0 | +171587 |
| 2sealed | 17 | Jacobson, Mark (1626) | Won 2-0 | +191606 |
| 3sealed | 1 | Price, Pat (1714) | Won 2-1 | +201626 |
| 4sealed | 33 | Fitzpatrick, Ralph (1485) | Lost 0-2 | -211605 |
| 5sealed | 99 | Haywood, Robert (1439) | Won 2-0 | +151620 |
| 6sealed | 58 | Buscaino, Anthony (1885) | Won 2-1 | +231643 |
| 7sealed | 64 | Cheung, Raymond (1575) | Lost 0-2 | -191624 |
| 8sealed | 131 | Rodgers, Ronald (1537) | Won 2-0 | +161640 |
| 9sealed | 90 | Chen, Andrew F (1574) | Lost 0-2 | -191621 |
| top | average opponent: 1593record: 6-3 | new rating: 1621 | ||
| Grand Prix Toronto 2010 (SOM limited) | starting rating: 1465 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 574 | Millhauser, Jonathan (1500) | Won 2-0 | +181483 |
| 2sealed | 413 | Caplan, David (1739) | Won 2-1 | +231506 |
| 3sealed | 367 | Tulloch, Brandon L (1519) | Won 2-1 | +181524 |
| 4sealed | 403 | Held, Eric J (1640) | Lost 0-2 | -161508 |
| 5sealed | 428 | Laking, Brian (1487) | Won 2-0 | +181526 |
| 6sealed | 360 | De Carolis, Paul (1521) | Won 2-1 | +181544 |
| 7sealed | 357 | Gareau, Philippe (1564) | Won 2-0 | +181562 |
| 8sealed | 337 | Chen, Danny (1596) | Lost 1-2 | -171545 |
| 9sealed | 361 | Kanon, Kyle (1646) | Won 2-0 | +201565 |
| 10sealed | 352 | Wood, Matthew E (1621) | Won 0-0 | +191584 |
| 11draft | 35 | Rigby, Neil (1637) | Lost 0-2 | -171567 |
| 12draft | 22 | Orr, Jim (1711) | Lost 0-2 | -161551 |
| 13draft | 1 | Sievers, Jeff C (1618) | Won 2-0 | +191570 |
| top | average opponent: 1600record: 9-4 | new rating: 1570 | ||
| Grand Prix Boston 2009 (M10 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 480 | Sequino, Larry A (1555) | Won 2-0 | +191519 |
| 2sealed | 576 | Giraud, Andre (1517) | Lost 1-2 | -181501 |
| 3sealed | 594 | Varone, Chris (1500) | Lost 1-2 | -181483 |
| 4sealed | 700 | Chan, Erik G (1464) | Lost 0-2 | -181465 |
| top | average opponent: 1509record: 1-3 | new rating: 1465 | ||